SURGICAL INSTRUMENT WITH DOUBLE CARTRIDGE AND ANVIL ASSEMBLIES

• US 20120325892A1
• Filed: 09/02/2012
• Published: 12/27/2012
• Est. Priority Date: 07/11/2009
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Kostrzewski, Stanislaw
• Granted Patent: US 8,631,993 B2
• Time in Patent Office: Days
• US Class Current: 227/176.1
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/072 for applying a row of staples in a single action , e.g. the staples being applied simultaneously
• CPC Class Codes: A61B 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 17/115 Staplers for performing anastomosis in a single operation
• CPC Class Codes: A61B 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 2017/07257 characterised by its anvil
• CPC Class Codes: A61B 2017/07271 characterised by its cartridge
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2017/2912 transmission of forces to actuating rod or piston
• CPC Class Codes: A61B 2017/2926 Details of heads or jaws
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments by marking A61B2090/395

Abstract

An end effector for use with a surgical instrument having a first cartridge assembly configured to deploy a first set of fasteners and a second cartridge assembly disposed distally of the first cartridge assembly. The second cartridge assembly is configured to move between an open position and an approximated position relative to clamp tissue. A central rod extends between the first cartridge assembly and the second cartridge assembly.

Claims

1-20. -20. (canceled)

21. An end effector for use with a surgical instrument, comprising:

a first cartridge assembly configured to deploy a first set of fasteners;

a second cartridge assembly, a proximal-most portion of the second cartridge assembly being disposed distally of a distal-most portion of the first cartridge assembly, wherein the second cartridge assembly is configured to move between an open position and an approximated position to clamp tissue; and

a central rod extending between the first cartridge assembly and the second cartridge assembly, the central rod movable longitudinally to move the second cartridge assembly between the open and approximated positions, the second cartridge assembly being slidably positioned on the central rod.

22. The end effector of claim 21, further comprising a first anvil assembly disposed distally of the first cartridge assembly.

23. The end effector of claim 22, further comprising a second anvil assembly disposed distally of the first anvil assembly.

24. The end effector of claim 23, wherein the second cartridge assembly is configured to deploy a second set of fasteners once the second cartridge assembly has moved to the approximated position.

25. The end effector of claim 23, wherein each of the first anvil assembly and the second anvil assembly is mounted on the central rod for movement in response to movement of the central rod.

26. The end effector of claim 24, wherein the second cartridge assembly includes a fastener pusher adapted to move between a distal position and a proximal position to eject the second set of fasteners from the second cartridge assembly.

27. The end effector of claim 26, wherein the fastener pusher of the second cartridge assembly is operatively connected to the central rod.

28. The end effector of claim 27, wherein the second cartridge assembly further comprises a biasing member, wherein the biasing member biases a cartridge housing against the fastener pusher.

29. The end effector of claim 23, wherein the first cartridge assembly further comprises a knife movable between a proximal position and a distal position.

30. The end effector of claim 29, wherein the first anvil assembly includes a weakened portion that is configured to break when the knife moves therethrough.

31. The end effector of claim 21, wherein the end effector is removably mountable to a surgical instrument.

32. The end effector of claim 22, where the first anvil assembly comprises a plurality of anvil pockets arranged in a substantially annular array and configured to deform the first set of fasteners, the first set of fasteners arranged in a substantially annular array.

33. The end effector of claim 24, wherein the central rod is removably mounted to a rod of the surgical instrument and the central rod is slidable to approximate the anvil assemblies and fastener cartridge assemblies.

34. An end effector for use with a surgical instrument, comprising:

a first cartridge assembly configured to deploy a first set of fasteners;

a second cartridge assembly disposed distally of the first cartridge assembly and being longitudinally aligned with the first cartridge assembly, wherein the second cartridge assembly is configured to move between an open position and an approximated position to clamp tissue; and

a central rod extending between the first cartridge assembly and the second cartridge assembly, the central rod movable longitudinally to move the second cartridge assembly between the open and approximated positions.

35. A surgical instrument for joining tissue, comprising:

a handle assembly;

an elongated portion extending distally from the handle assembly and defining a longitudinal axis, the elongated portion having a proximal portion and a distal portion;

an end effector disposed adjacent the distal portion of the elongated portion, the end effector including;

a first cartridge assembly configured to deploy a first set of fasteners, the first cartridge assembly being positioned substantially along the longitudinal axis; and

a second cartridge assembly disposed distally of the first cartridge assembly, the second cartridge assembly being positioned substantially along the longitudinal axis.

36. The surgical instrument of claim 35, further comprising a central rod extending between the first cartridge assembly and the second cartridge assembly the central rod movable substantially along the longitudinal axis to move the second cartridge assembly along the longitudinal axis.